我在使用自己的自定义适配器类的listview中循环遍历所有对象时遇到了一些问题。我们的想法是,对于选中复选框的每一行,都会发生一些事情。现在,函数checkBoxCount正确识别复选框的数量和位置。但是,当我检查多个盒子时,我得到了:
java.lang.IndexOutOfBoundsException: Invalid index 1, size is 0
错误发生在我将listitem指定为“f”的行。
void checkBoxCount(){
for (int i = 0; i < list.getCount(); i++) {
CheckBox cb = list.getChildAt(i).findViewById(R.id.checkBoxSendAnytimerTo);
if (cb.isChecked()){
Log.d("i= ",String.valueOf(i));
f = (Friend) list.getItemAtPosition(i);
}
}
}
这是我的适配器,因为我觉得那里的某些事情出错:
public class SendAnytimerAdapter extends ArrayAdapter<Friend> {
ArrayList<Friend> friendList = new ArrayList<>();
public SendAnytimerAdapter(Context context, int textViewResourceId, ArrayList<Friend> objects) {
super(context, textViewResourceId, objects);
friendList = objects;
}
@Override
public int getCount() {
return super.getCount();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v;
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.send_anytimer_adapter_layout, null);
TextView textView1 = (TextView) v.findViewById(R.id.textViewSendAnytimerAdapterName);
TextView textView2 = (TextView) v.findViewById(R.id.textViewSendAnytimerAdapterCount);
textView2.setText(friendList.get(position).getAnytimerCountFriend());
textView1.setText(friendList.get(position).getfriendUserName());
return v;
}
关于我的错误所在的任何线索?
提前致谢!
答案 0 :(得分:0)
您需要覆盖方法getCount
std::string